By using the serial sectioning technique, a study was made of the diffusion of 85Sr in single crystals (table 56). The data, for temperatures ranging from 255 to 398C, could be described by:

D (cm2/s) = 0.33 exp[-0.98(eV)/kT]

These results were consistent with a vacancy mechanism, and supported the thesis that ions with no outer d-shell electrons diffused almost entirely substitutionally in Ag halides.

A.L.Laskar, A.P.Batra, L.Slifkin: Journal of the Physics and Chemistry of Solids, 1969, 30[8], 2061-4

 

 

Table 56

Diffusion of 85Sr in AgCl Single Crystals

 

Temperature (C)

D (cm2/s)

397.5

1.49 x 10-8

363.0

6.75 x 10-9

320.8

1.61 x 10-9

287.0

6.23 x 10-10

255.1

1.56 x 10-10